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Full Description

ISO 14896:2009 specifies two methods for the measurement of the isocyanate content of aromatic isocyanates used as polyurethane raw materials. Method A is primarily applicable to refined toluene diisocyanate (TDI), methylene-bis-(4-phenylisocyanate) (MDI) and their prepolymers. Method B is applicable to refined, crude or modified isocyanates derived from toluene diisocyanate, methylene-bis-(4-phenylisocyanate) and polymethylene polyphenylisocyanate. It can also be used for isomer mixtures of toluene diisocyanate, methylene-bis-(4-phenylisocyanate) and polymethylene polyphenylisocyanate. Other aromatic isocyanates may be analysed by this method if precautions are taken to verify suitability. It is not applicable to blocked isocyanates.

 

Document History

  1. ISO 14896:2009

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    Plastics - Polyurethane raw materials - Determination of isocyanate content

    • Most Recent
  2. ISO 14896:2006


    Plastics - Polyurethane raw materials - Determination of isocyanate content

    • Historical Version
  3. ISO 14896:2000


    Plastics -- Polyurethane raw materials -- Determination of isocyanate content

    • Historical Version